Add a field marking if interface is a signature or not.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>

3 files changed, 12 insertions, 2 deletions

diff --git a/haddock-api/src/Haddock/Interface/Create.hs b/haddock-api/src/Haddock/Interface/Create.hs
index 5112360b..60843ee1 100644
--- a/haddock-api/src/Haddock/Interface/Create.hs
+++ b/haddock-api/src/Haddock/Interface/Create.hs
@@ -132,6 +132,7 @@ createInterface tm flags modMap instIfaceMap = do
 
   return $! Interface {
     ifaceMod             = mdl
+  , ifaceIsSig           = Module.isHoleModule sem_mdl
   , ifaceOrigFilename    = msHsFilePath ms
   , ifaceInfo            = info
   , ifaceDoc             = Documentation mbDoc modWarn
diff --git a/haddock-api/src/Haddock/InterfaceFile.hs b/haddock-api/src/Haddock/InterfaceFile.hs
index 0e8e1e0b..796a7ce6 100644
--- a/haddock-api/src/Haddock/InterfaceFile.hs
+++ b/haddock-api/src/Haddock/InterfaceFile.hs
@@ -372,9 +372,10 @@ instance Binary InterfaceFile where
 
 
 instance Binary InstalledInterface where
-  put_ bh (InstalledInterface modu info docMap argMap
+  put_ bh (InstalledInterface modu is_sig info docMap argMap
            exps visExps opts subMap fixMap) = do
     put_ bh modu
+    put_ bh is_sig
     put_ bh info
     put_ bh docMap
     put_ bh argMap
@@ -386,6 +387,7 @@ instance Binary InstalledInterface where
 
   get bh = do
     modu    <- get bh
+    is_sig  <- get bh
     info    <- get bh
     docMap  <- get bh
     argMap  <- get bh
@@ -395,7 +397,7 @@ instance Binary InstalledInterface where
     subMap  <- get bh
     fixMap  <- get bh
 
-    return (InstalledInterface modu info docMap argMap
+    return (InstalledInterface modu is_sig info docMap argMap
             exps visExps opts subMap fixMap)
 
 
diff --git a/haddock-api/src/Haddock/Types.hs b/haddock-api/src/Haddock/Types.hs
index 1f446224..e48acabe 100644
--- a/haddock-api/src/Haddock/Types.hs
+++ b/haddock-api/src/Haddock/Types.hs
@@ -78,6 +78,9 @@ data Interface = Interface
     -- | The module behind this interface.
     ifaceMod             :: !Module
 
+    -- | Is this a signature?
+  , ifaceIsSig           :: !Bool
+
     -- | Original file name of the module.
   , ifaceOrigFilename    :: !FilePath
 
@@ -155,6 +158,9 @@ data InstalledInterface = InstalledInterface
     -- | The module represented by this interface.
     instMod            :: Module
 
+    -- | Is this a signature?
+  , instIsSig          :: Bool
+
     -- | Textual information about the module.
   , instInfo           :: HaddockModInfo Name
 
@@ -184,6 +190,7 @@ data InstalledInterface = InstalledInterface
 toInstalledIface :: Interface -> InstalledInterface
 toInstalledIface interface = InstalledInterface
   { instMod            = ifaceMod            interface
+  , instIsSig          = ifaceIsSig          interface
   , instInfo           = ifaceInfo           interface
   , instDocMap         = ifaceDocMap         interface
   , instArgMap         = ifaceArgMap         interface